Desiccation - freezing sensitivity and longevity in seeds of Garcinia indica, G. cambogia and G. xanthochymus
Seed storage behaviour was investigated in Garcinia indica, G. cambogia and G. xanthochymus using desiccation - freezing sensitivity and longevity studies. The fresh mature seeds shed at moisture contents above 38% showed high germinability above 80%. Drying of seed and seed pieces below 15% moisture content for G. indica and G. cambogia and 20% moisture content for G. xanthochymus led to loss of viability. 'Critical moisture content' in seeds and seed pieces was around 21% in G. indica, 22% in G. cambogia and 27% in G. xanthochymus. In addition pieces were found to be highly sensitive to freezing temperatures of −196°C. Freshly harvested seeds of the three Garcinia species retained viability for 30 days at ambient temperature. Seed longevity in all three species could be enhanced to almost two times by storage at 15°C while chilling temperature of 5°C and freezing temperature of −20°C were unfavorable. The three Garcinia species were found to be highly recalcitrant.
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Document Type: Research Article
Publication date: October 1, 2005
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